Jacquard mechanism for looms



Dec. 22, 1925. 1,566,738

E. J. DACEY JAGQUARD MECHANISM FOR LOOMS Filed Aug.v 1925 3% gig Patented Dec. 22, 1925.

UNITED STATES PATENT OFFICE.

EDWARD J. DACEY, 0F wononsi na, MASSACHUSETTS, assrenonro CROMP I'oN & KNOWLES LOOM worms, or WORCESTER, MAssAoHUsE'r'trs, A CORPORATION on MASSACHUSETTS.

' JACQ'UARD MECHANISM non LOOMS.

Application filed August 18,1925. Serial No. 51,012.

To all 107mm- ?It may concern."

Be it known thatI, EDWARD J. DAoEY, a citizen of the United States, residing at Worcester. in the countyof'lVorcester and State of Massachusetts, have invented a 7 new and useful Jacquard Mechanism for Looms, of which the following is aspecification. c

This invention relates to improvements in jacquard mechanismfor looms and an object of the invention is to provide means for holding certain risers or hooks out of operative position while permitting the re-' maining 1100 {S to be operated on 'in'the usual manner.

Not infrequently it'happens that a loom is required to weave a lighter fabric than that for which it was designed and in order to prevent undue wear and reduce'the cut-' ting of the cards it is desirable to make some provision for holding out of action those hooks which are not to be used. For instance, the jacquard mechanism may be dee signed for use with six frames but it it may be desired to use the same with but five frames, in which case the hooks corresponding to the sixth framewould be idle and should be held in inactive position. The usual type of needle employed in jacquards has one end bent back on itself to form a U-shaped portion which passes through a guiding rod and is adapted to hold a spring located between the rod and a shoulder formed on the needle. It is a more particular object of my invention to employ locking pins supported by thejacquard mechanism and so positioned as to pass through the bent ends of certain of the needles and hold the same out of active position. By means of these pins I am enabled to convert a six frame jacquard into one of five frames without the use of specially formed needles.

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and setforth in the claims.

In the accompanying drawings wherein I have shown one convenient form of my invention,

Fig. 1 is a vertical longitudinal section through the upper portion of a jacquard having my invention applied thereto,

Fig. 2 is an enlarged elevation of the spring box shown in Fig. 1, and

Fig. 3 is a horizontal section 'online 33 of Fig. 2.

Referring to the drawings it will be seen 1 that Ihave provided a jacquardframe 10 having a griif ll provided with knives 12 which reciprocate vertically with the griff to engage the hooks 18. One end "of they jacquard is provided with-a needle board 14' through which'the ends of the needles 15 pass. A cylinder '16 positions the cards 17which cooperate with the needles to move some of them and to leave'others unmoved as the cylinder advances toward needle board lt. The opposite end of the jacquard construction and forms no part of my invention.

-. My improvements reside in the devices for holding selected needles in inoperative position and in carrying out my improvements I extend the upper and lower walls 28 and 29, respectively, of the "needle box 18 as shown in the drawings and provide the same with slots 30 open at one end to receive locking pins 31. Said pins 31 are formed with heads 32 which prevent the same from falling through the slots 30 and are preferably rectangular in cross-section, being thin enough to pass through the bent portions20 of the needle. As shown in Fig. 1 the upper pair of needles are locked in inactive position, the locking pins 31 passing through the bent ends thereof, the springs 22 holding the locking pins'31 in the slots 30 to prevent movement to the left thereof as shown in Fig. 1. As shown in the drawings the two hooks to the right of Fig. 1 are locked in inoperative position but are spaced slightly from the lower ends of'the knives 12 to avoid contact with the latter as they rise and fall. The dotted lines in said Fig.

1 indicate the position the hooks would assume if they were unlocked but pushed back by a blank space on the card. It is to be understood that the locking pins are narrow enough to permit the ordlnary operatlve movements of the needles without interfering with the same.

i From the foregoing it will be seen that I have provided a'very simple lock to coop-v erate with the usual form of needle to hold the same in inoperative position When desired. It will also be seen that the springs usually employed in connection with the needles cooperate to hold the locking pins inthe open slots 80 and that said pins are spaced suthcientlyfrom the adjacent ends of the needles topermit normal operative movement of the latter. I

Having thus described my invention it'is apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and I donot Wish to be limited to the details herein disclosed but what I claim is: V

1. In a jacquard mechanism for looms having reciprocable knives, risers to coop crate with the same, and needles formed with bent ends and adapted to position the risers, the combination of a locking pin extending through the bent ends otselectecl needles to hold the'same permanently in inoperative position.

2. In a jacquard mechanism for looms having reciprocable knives, risers to be enin portions of the spring box and being held v in said open slots by the springs.

4E. lhe combination in a acquard mechanism for looms having risers, knives to cooperate with the same and needles movable longitudinally to position the risers, ot a member extending transversely of the needles and engaging certain of the needles to- -hold' the same permanently in inoperative position to place'the risers corresponding v thereto in inoperative position with respect to the knives. q 1 I 5. The combination in a jacquard mechanism for looms having risers, reciprocable knives to cooperate with the same, needles to position the risers, and spring to return the needles to normal position, of means supportedin fixed position on the jacquard mechanism and cooperating with certain of the needles to hold them permanently out of normal position against the action of the springs associated therewith.

6.'I n a jacquard mechanism for looms having risers, reciprocable knives to cooperate therewith, needles to position the risers, and cards to cooperate with. the needles to move certain of said needles, the combination of stationary means carried by the jacquardto hold selected needles beyond the position to which theyare moved by the blank spaces of the cards.

In testimony whereof I have hereunt aflixed my signature.

EDWARD J. DAGEY. 

